Journal article
A simple method for coupled acoustic-mechanical analysis with application to gradient-based topology optimization
A simple computational framework for analysis of acoustic-mechanical coupling is proposed. The method is based one xtended finite element models for structural vibrations and acoustic pressure fluctuations using artificial mechanical and acoustic parameters in the non-structural and non-acoustic domains, respectively.
The acoustic-mechanical interaction is created using a self-coupling matrix assembled in the entire computational domain, effectively generating coupling at acoustic-mechanical interface boundaries. The simple analysis tool circumvents the need for explicit interface tracking with accuracy controlled explicitly using a contrast parameter between the physical and artificial material parameters.
Furthermore, the method’s direct applicability to gradient-based topology optimization, where elements can turn from mechanical to acoustic and vice versa, is demonstrated and illustrated using a simple example.
Language: | English |
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Publisher: | Springer Berlin Heidelberg |
Year: | 2019 |
Pages: | 1567-1580 |
ISSN: | 16151488 and 1615147x |
Types: | Journal article |
DOI: | 10.1007/s00158-018-2147-4 |
ORCIDs: | Jensen, Jakob S. |